This location is a metro station occupied by raiders. It consists of two main parts - a large building on the surface and huge underground complex. Before full exploration you should take large supplies of ammunition and medicaments as you will have to defeat about 20-30 enemies.
In the middle of the metro station building you will find an entrance to the tunnels which are very large but in fact consist of one large corridor.
In the first metro room you will find a police robot. It can be found behind a door closed with expert lock. The robot will help you in cleaning rooms of enemies.
On the station there is a room closed with a novice level lock. Inside you will find some bottlecaps, medicaments and a Stealth-Boy.
At the end of the metro tunnel you will enter a small basement. There you will find closed door which can be opened by pressing the button hidden behind a destroyed bookstand. From this point you can also get out to the surface, you don't need to go back. Walk through the small stairs, take the key from the furniture and leave through the hatch.
In one of the tunnel corridors you will find door locked with a card. The door is related to a quest done for Nick Valentine.